Smykkesmeden brutalist ring, size M-N, 6.5, 53-54

Here is a substantial brutalist ring by the Danish company Smykkesmeden, registered in Copenhagen from 1973 to 83. The ring has an open+back shank made of silvertone metal, on top of which perches a slice of uncut brown quartz, the top of which shows the crystal formations. This is all held in place by a silver frame and silvertone wires.